BMW Compact Build
Posted by DaveK
Grant Hughes Professional Moderator Location: Whitefish, MT Join Date: 01/11/2006 Age: Midlife Crisis Posts: 6,818 Rally Car: BMW |
John Vanlandingham Elite Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Grant Hughes Professional Moderator Location: Whitefish, MT Join Date: 01/11/2006 Age: Midlife Crisis Posts: 6,818 Rally Car: BMW |
Did ya watch Pikes Peak video? Cover the simple things first? Hahaha, you don't know Dave that well apparently.  Grant Hughes |
Dave Kern Senior Moderator Location: Centennial Join Date: 07/11/2008 Age: Midlife Crisis Posts: 1,085 Rally Car: Compact M3 & Evo IX |
Not that many of you guys are local, but here's a copy of my plea for help that I'm blasting around the interwebz:
We put a camera in the plug holes tonight and found marks on #2 piston and a valve stuck to #6 and can only rotate the crank ~70 degrees. (Photos are from my Kern Racing facebook page, so some folks may not be able to see them.) 
Best guess is the timing chain skipped...but unsure if valve snapped first and caused it, or if a skip caused the contact. Last time the head had to come off one retainer failed so a new head and one piston was enough to get it going again, but with marks on multiple pistons and a valve that looks like it snapped off, I'm thinking rather than trying to rebuild I should just find another engine. The car has 1995 OBD-I wiring, but I figure it wouldn't be all that bad to look at OBD-II options but I do have class rules to consider. Group 2 allows for engine displacement up to 3.0L, and Group 5 allows up to 5.0L...or forced induction on an engine up to 3.0L. So, since I'd like to keep the option of adding a blower down the line, I'm primarily looking for the following: - 3.0L M3 (1995 only) - 325 with VANOS - 328 engine I suppose I could also consider a Euro 3.0 or 3.2 since I think in the 290-330 range would probably be enough for a car racing in a limited traction environment, but just like the S54 engines, I suspect they're well outside my budget and may not be as plug and play as I need given my timeline. Please let us know if you have something or might have leads...next race is last weekend of the month and I'm hoping to have something figured out so we don't have to miss it. Land's End Hill Climb is a fantastic stretch of road: Thanks, Dave |
A.J. Johnson Mod Moderator Location: Pendleton OR Join Date: 01/07/2011 Age: Settling Down Posts: 1,381 Rally Car: 88 Audi 80 |
Alex Staidle Mega Moderator Location: Δx = ħ/2Δp Join Date: 08/21/2009 Age: Settling Down Posts: 1,719 Rally Car: Various Heaps |
this car needs more rotary....
 First Rally: 2010 First RallyX: 2004 (a bunch) Driver (0), Co-Driver (7) Organizer (3), Volunteer (3) Cars Built (2.5), Engines Blown (2) Cages Built (0) # of rotations (3.5) Last Updated, Apr 9, 2023 |
Mike Ball Mega Moderator Location: Simi Valley,Ca. Join Date: 07/15/2011 Age: Ancient Posts: 466 Rally Car: Nope...I wish...RWD 2 Door Jeep XJ 4.0 5-spd Dirt-o-cross car(we have no grass!)2.3 ZX3 rallyx car(sold) |
I'd love a rotary swap in something someday-but perhaps a lighter car than this due to the lack of torque issues..... No-what this car needs is the propeller emblem pried off and a blue oval installed! A nice 2.3(plus!) Duratec under the hood with some nice high compression pistons,ported head, forged internals screaming to insane RPM's,and of course some sweet ITB's! ................................................. ..................... Support your Local North American Rally Forum!! While they are still around-and get the hell off Farsebook!! We still have Specialstage & RallyAnarchy. Post up Here: https://rallyanarchy.com/phorum/posting.php and here: https://www.specialstage.com/forums/forum.php |
Grant Hughes Professional Moderator Location: Whitefish, MT Join Date: 01/11/2006 Age: Midlife Crisis Posts: 6,818 Rally Car: BMW |
John Vanlandingham Elite Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Dave Kern Senior Moderator Location: Centennial Join Date: 07/11/2008 Age: Midlife Crisis Posts: 1,085 Rally Car: Compact M3 & Evo IX |
If this car were to get a swap from another manufacturer, it'd be mitsubishi since I've got a spare 2.3L stroker 11:1 compression...and she's beggin fer it! But I don't want to limit where I can run the car, so it's going to stay BMW powered.
Agreed - sort of. The problem with simply dropping in the 2.8 as is is that the tune that I have on my current chip is for an M3 with bolt ons (exhaust & intake). By putting the M3 cams on the 328 I'd likely be close enough on the tune that the car would run ok...I'm not sure that'd be the case with the stock 328 cams. Looking at the car longer term and realizing that the car will likely see 3/4 of its races at CHCA events and 1/4 at rallies...I would like to have something more powerful than what's in it currently. I think that to make a rally this year, what's more realistic is taking the red car out since it's already got a log book and whatnot and taking the rest of the fall/winter to come up with a game plan for the Compact...oh, and guess what cams the red car has in it? Dave |
Alex Staidle Mega Moderator Location: Δx = ħ/2Δp Join Date: 08/21/2009 Age: Settling Down Posts: 1,719 Rally Car: Various Heaps |
John Vanlandingham Elite Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Dave Kern Senior Moderator Location: Centennial Join Date: 07/11/2008 Age: Midlife Crisis Posts: 1,085 Rally Car: Compact M3 & Evo IX |
Mike Ball Mega Moderator Location: Simi Valley,Ca. Join Date: 07/15/2011 Age: Ancient Posts: 466 Rally Car: Nope...I wish...RWD 2 Door Jeep XJ 4.0 5-spd Dirt-o-cross car(we have no grass!)2.3 ZX3 rallyx car(sold) |
Dave Kern Senior Moderator Location: Centennial Join Date: 07/11/2008 Age: Midlife Crisis Posts: 1,085 Rally Car: Compact M3 & Evo IX |
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